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What traditional welding methods can laser soldering replace?

  As a new welding technology, laser soldering has many advantages, such as high aspect ratio, minimal heat input, high density, strong welds, precise control, and non-contact atmospheric welding process. These characteristics allow laser soldering to replace traditional welding methods in certain application areas.

  First of all, laser soldering can replace contact welding methods, such as roller pressure welding, soldering iron welding, hot air welding and electromagnetic induction welding. In the production of photovoltaic cell components, laser soldering has gradually replaced these traditional methods due to its excellent temperature control, rapid response performance and high-precision visual positioning performance, which makes the welded battery string products stable and reliable in quality and has high welding efficiency. Contact welding method.

  Secondly, in the 3C electronics industry, laser soldering can also replace some traditional welding methods. For example, for the welding of precision micro-components such as camera modules, VCM modules, contact brackets, magnetic heads, etc., the accuracy and non-contact nature of laser soldering make it an ideal choice. In addition, technologies such as laser solder paste welding and laser solder wire are also widely used in the welding of wireless headsets, vibration motors, reversing radars, shielding covers and other products. These are also areas where traditional welding methods may be involved.

Illustration of the finished product of laser solder wire/solder paste/solder ball welding sample

  Generally speaking, due to its unique advantages, laser soldering can replace traditional welding methods in many fields, especially in welding applications that require high precision, high efficiency, and low thermal impact. However, it should be noted that different welding methods have their own characteristics and applicable scenarios, and the choice of which welding method needs to be considered based on specific process requirements and product characteristics.

  

Diagram of Songsheng Optoelectronic Laser Constant Temperature Soldering System

  As an enterprise that has been deeply involved in the field of laser soldering for more than 20 years, Songsheng Optoelectronics is well aware of the wide application and irreplaceable advantages of laser in industrial production and processing. Laser soldering in laser welding uses laser as the heat source to achieve soldering. Welding technology for joining base metal. The brazing part absorbs the laser and converts it into heat energy. The temperature of the heated part rises sharply to the brazing temperature, causing the solder to melt, wet, and spread. After the laser irradiation stops, the brazing part cools rapidly and the solder solidifies, thus forming a strong and reliable solder joints. The process is divided into two steps: first, preheat the laser soldering solder paste. While the solder paste is preheating, the solder joints will also be preheated. Then, the solder paste will be melted into liquid tin at high temperature to completely moisten the solder liquid. Wet pad, eventually forming a solder. The use of laser soldering for solder paste welding has high energy density and high heat transfer efficiency. It can achieve localized heating and melting welding. It is a non-contact welding, which can reduce the damage to the battery cells caused by the mechanical structure. Mainly used in automotive electronics, semiconductor, 3C electronics and other industries.

  Songsheng Optoelectronics laser soldering system consists of multi-axis servo modules, real-time temperature feedback systems, CCD coaxial positioning systems and semiconductor lasers; Songsheng Optoelectronics has independently developed intelligent soldering software through years of welding process exploration, supporting the introduction of multiple format file. The original PID online temperature adjustment feedback system can effectively control constant temperature welding to ensure welding yield and precision. This product has a wide range of applications and can be used in online production or independent processing. Has the following features and advantages:

  1. Using non-contact welding, there is no mechanical stress damage and the thermal effect is small.

  2. Multi-axis intelligent working platform (optional), which can handle various complex precision welding processes.

  3. The coaxial CCD camera positioning and processing monitoring system can clearly display the solder joints and correct the alignment in time to ensure processing accuracy and automated production.

  4. The original temperature feedback system can directly control the temperature of the solder joints and present the welding temperature curve in real time to ensure the welding yield.

  5. Laser, CCD, temperature measurement, and indicator light are four-point coaxial, which perfectly solves the problem of overlapping multiple optical paths in the industry and avoids complicated debugging.

  6. Under the condition of ensuring the excellent and good rate of 99%, the minimum diameter of the welded spot is 0.2mm, and the welding time of a single solder spot is shorter.

  7. The X-axis, Y-axis, and Z-axis are suitable for welding more devices and are more widely used.

  The above is the specific content of Wuhan Songsheng Optoelectronics on which traditional welding methods can be replaced by laser soldering. If you have any questions, please call or add WeChat for detailed inquiries. We will continue to update more relevant instructions for you. You can follow our website to learn more Information.

 

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